Labels:box | bulletin board | crt screen | dialog box | monitor | reckoner | shelf OCR: DF Mermory Source Destination pointe 20000 DS 2000 pointer 20001 000 Source 20002 20003 block Destination 20004 2000 block 20005 2000 0002 2000 0005 DF Memory Source 20000 DS 2000 pointe Last 20001 byte 20002 copied 0007 2000 20004 2000 Destination 20005 pointer 2000 0003 20007 0004 FIGURE 11.4 When the source block in a block copy overlaps the desti nation block aud starts a lower address than the destina tion block the data will be corrupted as it's copied if DF is set to (v) The state of the pc before such copy performed. B) The state of the PC after the first lepetition of rep movsb is completed. As expected, the character which is the first element of the source block, has been copied to the first element of the destinration block. No tice though, that the first element of 'the destin ...
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